Hand-pump.



G. W, COOPER.

HAND PUMP.

APPLICATION FILED JULY 19,1912.

Patented June 23, 1914.

Z SHEETSSHEET 1.

Jung

COLUMBIA PLANOURAPH co., WASHINGTON, D c.

G. W. COOPERv HAND PUMP.

APPLIOATION FILED JULY 19,1912.

1,101 ,41 O, Patented June 23, 1914.

2 SHEETS-SHEET 2.

COLUMBIA PLANOGRAPH CO" WASHINGTON, D. C:

GEORGE W. COOPER, OF UNION CITY, OKLAHOMA.

HAND-PUMP.

Specification of Letters Patent.

Patented June 23, 1914.

Application filed July 19, 1912. Serial No. 710,525. c

To all whom it may concern Be it known that I, GEORGE W. COOPER acitizen of the United States, residing at Union City, in the county ofCanadian,

I an improved and simple form of operating mechanism by which a maximumamount of water may be pumped with a minimum expenditure of labor, thedevice being con structed to avoid lost motion.

With the above and other objects in view the invention consists ofcertain other combinations and arrangements of parts as will behereinafter more fully described and claimed, it being a still furtherobject of the invention to provide a device which will not be likely toget out of working order.

In the drawings :-Figure 1 is a front elevation of my improved pump.Fig. 2 is a vertical sectional view thereof. Fig. 3 is a side elevationof the pump. Fig. 4. is an enlarged sectional view on the line 4.-4: ofFig. 1. Fig. 5 is a detail view of the slotted plate used in connectionwith the device.

Referring to the drawings in detail, there is shown a pump stand 10having the usual spout 11 and head portion 12, the same being adapted tobe supported upon a base 13 over a well. A piston rod 14 operates withina pump cylinder 15 and has a piston 16 at its lower end operating withinthe cylinder to admit water to the cylinder above the piston upon thedownward stroke thereof and lift the water to be discharged through thespout 11 as the piston is raised.

In order to actuate the piston rod, the enlarged portion 12 of the pumpstand is provided with a vertical extension 17 at one side thereofdiametrically opposite relative to the spout and has an offset upperbifurcated portion forming apertured cars 18. A11 operating handle 19 ispivotally mounted intermediate its ends between the cars 18 as shown at20 and has its short arm connected to an upwardly extending portion 21of a slotted plate 22, the latter plate having a longitudinal slot 23therethrough and having a depending portion 24 which is pivotallyconnected to the pump rod.

A cog gear 25 is rotatably journaled upon a shaft 26 in the upright 17upon its inner face and carries an eccentric pin 27 provided with anenlarged head portion and carrying a sleeve 28 over which the slottedplate is fitted. A pinion 29 is rotatably mount-ed in a shaft 30 belowthe shaft 26 and is engaged by the teeth of the cog gear '25 so as tolmpart rotation to said shaft and to a weighted fly wheel 31 mountedupon its opposite end so as to assist in the operation of the pump afterit has been started and to insure even motion thereof.

In the operation of the device the handle 19 is reciprocated verticallycausing a reciprocation of the slotted plate 22 and as the pin 27 ismounted e'ccentrically upon the cog gear 25, reciprocation of the platewill cause the pump rod and piston to be similarly operated and as theplate is reciprocated, the pin will move within the slot of the plateand prescribe a circle during one operative movement of the pistonupwardly and downwardly. The slotted plates provided insure operation ofthe pump with least possible lost motion and motion is imparted to theweighted fly wheel 31 through the intermeshing gears to assist in theoperation of the pump and to make it operate more evenly.

The device is simple in construction, strong and durable in use,efficient in operation and economical to manufacture.

I claim 1. The combination with a pump of a bracket thereon, a gear onsaid bracket having a wrist pin, a cross head having aslot receivingsaid wrist pin, a handle lever on said bracket, a valved piston in saidpump, and pivotal connections between said lever and said cross head andbetween said cross head and said valved piston permitting of said crosshead moving on said wrist pin toward and away from said gear inconforming to the movements of the lever and valved piston.

2. The combination with a pump, of a bracket thereon, a gear on saidbracket having a wrist pin, a balanced wheel operatively connected toand driven by said gear, a cross head having a slot receiving said wristpin, a handle lever on said bracket a valved piston in said pump, andlinks pivotally connected to said cross head, one of said links beingpivotally connected to said lever and the other of said links beingpivotally connected'to said valved piston, said links permitting ofsaidcross head moving bodily toward, and away from said gear on said 10Wrist pin in'conforming to the movements of the lever and valved piston.In testimony whereof, I aflix my signature, in presence of twoWitnesses.

' GEORGE W. COOPER. Witnesses:

DAN SWEENEY, G. D. DIXON.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents.

Washington, D. 0. r

